SuperLift 6″ Suspension Lift Kit for 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991 Chevy/GMC 1/2 Ton Solid Axle Vehicles 4WD
Part: K420
- Replacement Front leaf springs
- Durable Urethane spring eye bushings
- Raise steering arm or drop drag link available
- Superlift Superide shock absorbers are included
- Lifetime Warranty
- Satisfaction Guarantee
Tire and Wheel Info
35×12.50 tire on standard offset wheel
IMPORTANT DISCLAIMER: The provided tire/wheel fitments are approximate.
Actual dimensions of a given tire size can vary considerably from one brand to another.
Manufacturers’ wheel offset and backspacing measurement points are not always consistent.
Backspacing greatly impacts tire-to-fender clearance when turning.
Wheel width and backspacing influence whether the tires protrude past the fenders, and to what extent.
Considering these important factors, we recommend that you fit-check your tire/wheel selection prior to purchasing.
Installation Notes
1977.5-91 models require clearancing (machining) of the front driveshaft CV cluster to prevent binding. If vehicle has single exhaust, the cross-over pipe requires modification to clear front driveshaft.
Optional extended length brake hoses recommended.
Brake line / hose relocating hardware included in kit box.
88-91 Blazer, Jimmy, and Suburban require additional sleeve kit part # 315-88.
Installation Instructions
Product Overview
Superlift Superide 6″ leaf springs feature tapered leaves, bolt-style spring clips and Teflon inserts between each leaf to ensure a quiet and smooth ride. Durable Poly spring bushings, replacement front U-bolts, brake hose relocation brackets, a rear block and u-bolt kit and a 4″ raised steering arm complete the lift. The kit is packaged complete with Superlift Superide shocks.
Options include single and dual steering stabilizers, sway bar extension brackets, a front driveshaft spacer and a 2″ or 4″ drop drag link.
NOTE: If the vehicle is factory-equipped with auxiliary (dual) front shocks also order quantity two, part number 85150 Superide shocks.
NOTE: 88-91 Blazer/Jimmy and Suburban models require additional part number 315-88 bushing sleeve kit.
Fitment Table
| Year Range |
Make |
Model |
Drivetrain |
Engine |
Cab |
| 1973-1987 |
Chevy/GMC |
1/2-ton Pickup |
4WD |
|
|
| 1973-1991 |
Chevy/GMC |
1/2-ton Suburban |
4WD |
|
|
| 1973-1991 |
Chevy/GMC |
Blazer / Jimmy (Fullsize) |
4WD |
|
|
